Canon EF 20mm f/2.8 USM

Lens Reviews / Canon Lenses i Lab tested
Lens Specifications
Name Canon EF 20mm f/2.8 USM
Image Circle 35mm
Type Wide Prime
Focal Length 20mm
APS Equivalent 32mm
Max Aperture f/2.8
Min Aperture f/22
Diaphragm Blades 6
Lens Construction 11 elements in 9 groups
Diagonal Angle of View(Based on image circle) 94 degrees
Focus Details Inner focusing; full-time manual focus and USM
Front Element Rotation No
Zoom System n/a
Closest Focus 0.25m / 0.8 ft.
Magnification Ratio 0.14x / 1:7.1
Filter Size 72mm
Dimensions(Length x Diameter) 77mm x 71mm / 2.8 in. x 3.1 in.
Weight 405g / 14.3 oz
Typical Online Price US$420